#main {
	margin: atuo;
	width: 800px;
	height: 500px;
	padding: .5 3em;
}

#editor {
	float: left;
	width: 650px;
	height: 500px;
}

#treenav {
	float: right;
	width: 130px;
	height: 500px;
}

#nav {
	border: 5px;
	padding: .5 3em;
}